Can not get selection box selecting more than one object in Blender 2.8
I realized the exact same problem when using my laptop without power connected. The box selection bug happens when power is not connected and battery mode is set to "Saver" mode. When set to any other mode other than power saver, the box selection works fine. My laptop is running intel graphics HD 630/Nvidia Geforce GTX 1050.

PS. I am a beginner in Blender.